[TenTec] 238 Tuner

[Ron Castro]

Each of the internal caps that get selected by the switch are 470 pf, so you 
get a little less than 2,500 pf will all of them engaged and the variable 
cap (500 pf) at full.  To give the maximum range, you would put a 2,000 pf 
cap external, but a smaller one will work in most cases.  I think the 
original caps were 5 kV, but the RF current is very important if you run 
high power.  Generally, 'doorknob' capacitors are your best bet.  Check my 
article at :

http://n6ie.com/Ten_Tec_238.html

            Ron N6IE
       www.N6IE.com

----- Original Message ----- 
From: "Jim Kjar W0CML" <jrkjar at myedl.com>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Sunday, February 21, 2010 12:18 PM
Subject: [TenTec] 238 Tuner


> Got a used 238 tuner.  What size external cap do you use to extend range 
> on 160?  I assume you also need at least 5kv.
>
> 73,
>
> Jim
> w0cml
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